When red glass is heated at high temperature, it will appear

When red glass is heated at high temperature, it will appear green (Option B). This change in appearance happens because heating alters the glass’s molecular structure, affecting its ability to absorb and transmit light. Red glass typically contains metal oxides like cadmium or selenium, which give it its red color by absorbing certain wavelengths of light and reflecting or transmitting others. At high temperatures, these oxides may undergo chemical changes or reduction reactions, altering their optical properties. As a result, the glass may no longer absorb red wavelengths effectively but instead allows green wavelengths to pass through or become dominant in its appearance. This phenomenon is observed in glassmaking processes or accidental heating scenarios, where the color of glass can change dramatically due to thermal effects. Understanding these changes is important in fields such as glass art, industrial manufacturing, and materials science, where the properties of materials under different conditions dictate their functionality and aesthetic appeal.